Hello everyone! I'm having huge troubles with Mysql using 100% of CPU at peculiar times. I don't know when this problem starts and I don't know the reason, but when it happends I kill nagios, ndoutils and Mysql, and try to restart Mysql, ndoutils and Nagios at this order. When I start Nagios, the CPU usage of Mysql goes to 100% and everything just freezes with the initials INSERT/UPDATES made by ndoutils. Has anyone had the same problem? I've changed my.cnf to hold slow-queries logging, an have seen at intervals of 1 minute a query runned by ndo that tries to delete service_checks results. It takes about 4 seconds too run. Is this expected? Can anyone help me? Running Nagios 3.0.3, Debian etch, NDO2DB 1.4b7 and mysql Ver 14.12 Distrib 5.0.45. Slow-Queries log: # Time: 090303 14:29:25 # User@Host: ndoutils[ndoutils] @ localhost [] # Query_time: 4 Lock_time: 0 Rows_sent: 0 Rows_examined: 0 DELETE FROM nagios_servicechecks WHERE instance_id='1' AND start_time<FROM_UNIXTIME(1235496561); # Time: 090303 14:30:26 # User@Host: ndoutils[ndoutils] @ localhost [] # Query_time: 4 Lock_time: 0 Rows_sent: 0 Rows_examined: 0 DELETE FROM nagios_servicechecks WHERE instance_id='1' AND start_time<FROM_UNIXTIME(1235496622); Thank you. -- []'s Lívio Zanol Puppim